Cited by 10Bone Metabolism and DiseasesBone health and osteoporosis researchEstrogen and related hormone effects

Aging and menopause reprogram osteoclast precursors for aggressive bone resorption

Open access
Møller, Anaïs Marie Julie, Delaissé, Jean-Marie, Olesen, Jacob Bastholm, Madsen, Jonna Skov, Canto, Luisa Matos, Bechmann, Troels, Rogatto, Silvia Regina, Søe, Kent·2020·Bone Research

Abstract

Women gradually lose bone from the age of ~35 years, but around menopause, the rate of bone loss escalates due to increasing bone resorption and decreasing bone formation levels, rendering these individuals more prone to developing osteoporosis. The increased osteoclast activity has been linked to a reduced estrogen level and other hormonal changes. However, it is unclear whether intrinsic changes in osteoclast precursors around menopause can also explain the increased osteoclast activity. Therefore, we set up a protocol in which CD14 + blood monocytes were isolated from 49 female donors (40–66 years old). Cells were differentiated into osteoclasts, and data on differentiation and resorption activity were collected. Using multiple linear regression analyses combining in vitro and in vivo data, we found the following: (1) age and menopausal status correlate with aggressive osteoclastic bone resorption in vitro; (2) the type I procollagen N-terminal propeptide level in vivo inversely correlates with osteoclast resorption activity in vitro; (3) the protein level of mature cathepsin K in osteoclasts in vitro increases with age and menopause; and (4) the promoter of the gene encoding the dendritic cell-specific transmembrane protein is less methylated with age. We conclude that monocytes are “reprogrammed” in vivo, allowing them to “remember” age, the menopausal status, and the bone formation status in vitro, resulting in more aggressive osteoclasts. Our discovery suggests that this may be mediated through DNA methylation. We suggest that this may have clinical implications and could contribute to understanding individual differences in age- and menopause-induced bone loss.

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  • Fusion of the earliest osteoclast precursors into multinucleated mature osteoclasts is a critical process in osteoclastogenesis, as the number of nuclei per cell determines osteoclast aggressiveness.

    “The fusion of the earliest osteoclast precursors into multinucleated, mature osteoclasts is a critical process in osteoclastogenesis, as the number of nuclei per cell determines osteoclast aggressiveness.154”

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Authors
Møller, A. M. J., Delaissé, J.-M., Olesen, J. B., Madsen, J. S., Canto, L. M., Bechmann, T., Rogatto, S. R., & Søe, K.
Affiliations
  • University of Southern Denmark (DK)
  • Odense University Hospital (DK)
  • Vejle Sygehus (DK)
Corresponding author
  • Møller, Anaïs Marie Julie
  • Søe, Kent
Venue
Bone Research
Published
2020-07-01
Volume
8
Issue
1
Pages
27-27
ISSN
  • 2095-4700 (ISSN-L)
  • 2095-6231
OpenAlex
W2997538246
Cited by
6
References
74
Citations by year
2024: 1 · 2022: 3 · 2021: 2
FWCI
0.41
Type
journal article
Language
en
Open access
Locations
  • Bone Research (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Journal of Bone and Mineral Research
Funders
  • Syddansk Universitet
  • Sygehus Lillebælt
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
menopause, aging, osteoclast precursors, bone resorption, osteoporosis, CD14+ monocytes, osteoclastogenesis, cathepsin K, DNA methylation, type I procollagen N-terminal propeptide, estrogen deficiency, bone loss

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